Update CONTRIBUTING.md

Updated CONTRIBUTING.md to specify that the `this` keyword should be avoided.
Fixes #35: Solution file should be located in the root of the repository
Update README.md
Update README.md
Update README.md
Update README.md

Add links to Google Groups and JabbR
Update README.md

Add a link to the samples repository
Remove samples directory
Merge branch 'master' of github.com:scriptcs/scriptcs

* 'master' of github.com:scriptcs/scriptcs:
  Update README.md
added PowerArgs for cmd argument parsing
# Updated text for DEBUGGING.md. Still need to add images
# ADded images/DEBUGGING
Update DEBUGGING.md to include images
Removed emptyProject.png
Merge branch 'debugdocs' of github.com:dschenkelman/scriptcs into debugdocs
Merge pull request #112 from filipw/dev

added PowerArgs for cmd argument parsing
Bump version number to 0.3.0-alpha
Append the date for nightly builds
Merge pull request #113 from dschenkelman/debugdocs

Updated DEBUGGING.md with support for VS debugging.
adding chocolatey nupkg. This bundles all Scriptcs assemblies in a scriptcs nupkg. The ChocolateyInstall will copy them to `$env:appdata\scriptcs, use nuget.exe to install nuget.core and roselyn assemblies and will then add $env:appdata\scriptcs to the path.